Re: Interesting problem with MD array creation

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On 3/23/2010 8:01 AM, Jon Masters wrote:
> On Tue, 2010-03-23 at 06:06 +0100, Fabio M. Di Nitto wrote:
> 
>> I had an interesting problem at some point in time with this setup where
>> silo and raid were not playing nicely together.
> 
> It'll depend upon which of the 3 different superblock types you have in
> use (whether it is using the boot block for its data) - please see my
> kernelpodcast.org for a summary of the issues.

Right, at the time I was using the type that stores the RAID metadata at
the end of the disk (the old ones.. can´t remember the version number
right away), and that´s also why I specifically mentioned FS corruption
and not RAID corruption.

>> As workaround I used to add an empty partition at the beginning of the
>> disk (the smallest size as possible - basically just a padding
>> partition) on both RAID-1 disks and start using the disk for real from sdX2.
> 
> Or you can just begin a partition not at 0. I do a similar thing on my
> Fedora 12 alpha Utra 5 in order to avoid any potential hiccups.

Indeed that´s also another solution.

Fabio
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